The Selection Instrument for Flight Training (known as SIFT) is used to select applicants for Army Aviation career. The SIFT test is a multiple-aptitude battery that measures developed abilities and helps predict future academic and occupational success in the military. You can only take the SIFT test twice in your lifetime. The SIFT was introduced to replace the older AFAST test. Are you preparing for the SIFT Math test? Check out the SIfT Math books and resources below. All SIFT Math materials contain full-length SIFT Math Tests.